The reference for locomotives and railcars


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Finnish Railway series Sm4
Finland | 1999 | 30 produced
Sm4 in July 2016 on the Helsinki-Lahti line near Mäntsälä
Sm4 in July 2016 on the Helsinki-Lahti line near Mäntsälä

For faster commuter trains into the outer regions of the Helsinki metropolitan area, Fiat developed the Sm4 EMU for VR. These are two-car EMUs where both axles of the inner bogies are powered with 1,200 kW in total. With a top speed of 160 km/h, up to five sets can be coupled. In 1999, the first batch of ten sets was not built by Fiat, but by CAF in Spain. Also the second batch of 20 was built by CAF, but this time in Spain.

Built1999, 2004-2005
Axle config2-B+B-2 
Gauge4 ft 11 13/16 in (Russian broad gauge)
Dimensions and Weights
Length177 ft 2 in
Wheelbase70 ft 6 7/16 in
Fixed wheelbase8 ft 2 7/16 in
Empty weight251,327 lbs
Axle load31,967 lbs
Power sourceelectric - AC
Electric system25,000 V 50 Hz
Continuous power1,609 hp (1,200 kW)
Top speed99 mph
Power Plant
Calculated Values
last changed: 06/2024

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